Finding the Fourth Proportional to 127,105.61, 175,413.04 and 76,820.81

Step by Step Solution

1. Step 1: Write the proportion equation
   127,105.61 : 175,413.04 = 76,820.81 : x
2. Step 2: Convert to fraction form
   127,105.61/175,413.04 = 76,820.81/x
3. Step 3: Cross multiply
   127,105.61x = 175,413.04 × 76,820.81
4. Step 4: Simplify right side
   127,105.61x = 13,475,370,748.25
5. Step 5: Solve for x
   x = 13,475,370,748.25/127,105.61
6. Step 6: Final answer
   x = 106,017.12